TWM445468U - Assembly mechanism - Google Patents
Assembly mechanism Download PDFInfo
- Publication number
- TWM445468U TWM445468U TW101211862U TW101211862U TWM445468U TW M445468 U TWM445468 U TW M445468U TW 101211862 U TW101211862 U TW 101211862U TW 101211862 U TW101211862 U TW 101211862U TW M445468 U TWM445468 U TW M445468U
- Authority
- TW
- Taiwan
- Prior art keywords
- mounting mechanism
- driving member
- base
- pin
- plate
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/10—Aligning parts to be fitted together
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53796—Puller or pusher means, contained force multiplying operator
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manipulator (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
Description
本新型涉及一種安裝機構,尤其涉及一種膠塞安裝機構。The invention relates to a mounting mechanism, in particular to a rubber plug mounting mechanism.
習知電子產品之殼體在藉由螺絲進行鎖合後,通常需要在安裝螺絲之鎖合孔內塞入膠塞,以防止螺絲被腐蝕及使電子產品獲得較佳之外觀。一種膠塞之自動安裝機構包括氣缸及與其相連之針頭。使用時,將膠塞定位於針頭上,然後藉由氣缸帶動針頭運動,以將膠塞壓入殼體之安裝有螺絲之鎖合孔中。然,使用該種膠塞自動安裝機構容易出現針頭與鎖合孔沒有完全對準之情況,此時,膠塞不能被順利壓入鎖合孔中,需對膠塞自動安裝機構之位置進行多次調整,方能順利插入膠塞,導致膠塞之安裝效率較低。After the housing of the conventional electronic product is locked by screws, it is usually necessary to insert a rubber plug into the locking hole of the mounting screw to prevent the screw from being corroded and to obtain a better appearance of the electronic product. An automatic mounting mechanism for a rubber plug includes a cylinder and a needle connected thereto. In use, the rubber stopper is positioned on the needle, and then the needle is moved by the cylinder to press the rubber plug into the screw-fitted hole of the housing. However, the use of the rubber plug automatic mounting mechanism is prone to the fact that the needle and the locking hole are not completely aligned. At this time, the rubber plug cannot be smoothly pressed into the locking hole, and the position of the automatic plug mounting mechanism needs to be performed. After the adjustment, the rubber plug can be inserted smoothly, resulting in low efficiency of the rubber plug installation.
鑒於以上內容,有必要提供一種安裝效率較高之安裝機構。In view of the above, it is necessary to provide an installation mechanism with higher installation efficiency.
一種安裝機構,包括基座及活動設置於該基座上之插針,該安裝機構還包括分別與該插針相連之第一驅動件及第二驅動件,該第一驅動件驅動該插針沿其軸向運動,該第二驅動件驅動該插針進行旋轉,以使該插針相對該基座作軸向旋轉進給。A mounting mechanism includes a base and a pin disposed on the base, the mounting mechanism further includes a first driving component and a second driving component respectively connected to the pin, the first driving component driving the pin Moving along its axial direction, the second drive member drives the pin to rotate to axially feed the pin relative to the base.
上述安裝機構之插針在第一驅動件及第二驅動件之帶動,可驅使膠塞以軸向運動結合旋轉運動之複合運動方式進入工件之鎖合孔,在插針與鎖合孔出現一定偏差之時候,膠塞能夠產生一定量之徑向彈性形變,從而順利將膠塞插入鎖合孔內,而無需對插針位置進行多次調整,具有較高之安裝效率。The pin of the mounting mechanism is driven by the first driving component and the second driving component, and can drive the rubber plug to enter the locking hole of the workpiece by the combined motion of the axial movement and the rotating motion, and the pin and the locking hole appear certainly. At the time of deviation, the rubber plug can generate a certain amount of radial elastic deformation, so that the rubber plug can be smoothly inserted into the locking hole without multiple adjustments of the pin position, and the installation efficiency is high.
下面將結合附圖及實施方式對本新型之安裝機構作進一步之詳細說明。The mounting mechanism of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
請參閱圖1至圖3,本新型實施例之安裝機構100包括基座20及設置於基座20上之插針30、第一驅動件40、支撐架50、第二驅動件60、複數連接元件70、導向件80、連接座90、第一蓋板101及第二蓋板102。Referring to FIG. 1 to FIG. 3 , the mounting mechanism 100 of the present invention includes a base 20 , a pin 30 disposed on the base 20 , a first driving component 40 , a support frame 50 , a second driving component 60 , and a plurality of connections The component 70, the guide 80, the connector 90, the first cover 101 and the second cover 102.
基座20在本實施例中為矩形框體,其包括頂板21、第一側板22、底板23及第二側板24。該第一側板22及該第二側板24連接該頂板21和底板23。頂板21、第一側板22、底板23及第二側板24藉由複數固定件28相互固定。The base 20 is a rectangular frame in this embodiment, and includes a top plate 21, a first side plate 22, a bottom plate 23, and a second side plate 24. The first side plate 22 and the second side plate 24 connect the top plate 21 and the bottom plate 23. The top plate 21, the first side plate 22, the bottom plate 23, and the second side plate 24 are fixed to each other by a plurality of fixing members 28.
第一驅動件40設置於頂板21上,其包括主體部41及由主體部41延伸出之第一驅動軸42。第一驅動軸42穿過頂板21並與支撐架50相連接。本實施例中,第一驅動件40為氣缸。The first driving member 40 is disposed on the top plate 21 and includes a main body portion 41 and a first driving shaft 42 extending from the main body portion 41. The first drive shaft 42 passes through the top plate 21 and is coupled to the support frame 50. In this embodiment, the first driving member 40 is a cylinder.
支撐架50設置於基座20內,其包括連接框51及固定於連接框51底部之支撐板52。本實施例中,連接框51大致為U形,其包括固定桿511及由固定桿511兩端分別垂直延伸形成之二連接臂512。固定桿511與第一驅動軸42固定連接。二連接臂512分別與支撐板52固定連接。支撐板52為矩形板。The support frame 50 is disposed in the base 20 and includes a connecting frame 51 and a support plate 52 fixed to the bottom of the connecting frame 51. In this embodiment, the connecting frame 51 is substantially U-shaped, and includes a fixing rod 511 and two connecting arms 512 extending perpendicularly from opposite ends of the fixing rod 511. The fixed rod 511 is fixedly coupled to the first drive shaft 42. The two connecting arms 512 are fixedly connected to the support plate 52, respectively. The support plate 52 is a rectangular plate.
第二驅動件60包括主體部61及由主體部61延伸出之第二驅動軸62,主體部61設置於支撐板52上,且第二驅動軸62穿過支撐板52後與插針30連接。本實施例中,第二驅動件60為電動馬達。The second driving member 60 includes a main body portion 61 and a second driving shaft 62 extending from the main body portion 61. The main body portion 61 is disposed on the supporting plate 52, and the second driving shaft 62 passes through the supporting plate 52 and is connected to the pin 30. . In this embodiment, the second driving member 60 is an electric motor.
插針30活動地設置於基座20之底板23上,導向件80套設於插針30上,且固定於底板23之底面上。The pin 30 is movably disposed on the bottom plate 23 of the base 20, and the guide member 80 is sleeved on the pin 30 and fixed to the bottom surface of the bottom plate 23.
連接元件70連接支撐板52及底板23,其包括導桿71、彈性件72、導套73及二卡環74。導桿71包括導向部711及形成於導向部711一端之固定部712。固定部712與支撐板52固定連接,彈性件72套設於導向部711上,導套73套設於導向部711遠離固定部712之一端。導套73之兩端分別開設有定位槽(圖未示)。導套73穿設於底板23中,二卡環74分別卡入導套73之二定位槽中,且分別位於底板23之二側,以將導套73定位於底板23上。本實施例中,安裝機構100包括四連接元件70,且分別連接於支撐板52及底板23之四邊角處。The connecting member 70 connects the support plate 52 and the bottom plate 23, and includes a guide rod 71, an elastic member 72, a guide sleeve 73 and two snap rings 74. The guide rod 71 includes a guide portion 711 and a fixing portion 712 formed at one end of the guide portion 711. The fixing portion 712 is fixedly connected to the supporting plate 52 , the elastic member 72 is sleeved on the guiding portion 711 , and the guiding sleeve 73 is sleeved on one end of the guiding portion 711 away from the fixing portion 712 . The two ends of the guide sleeve 73 are respectively provided with positioning grooves (not shown). The guide sleeves 73 are disposed in the bottom plate 23, and the two snap rings 74 are respectively inserted into the two positioning slots of the guide sleeves 73, and are respectively located on two sides of the bottom plate 23 to position the guide sleeves 73 on the bottom plate 23. In this embodiment, the mounting mechanism 100 includes four connecting elements 70 and is connected to the four corners of the support plate 52 and the bottom plate 23, respectively.
連接座90在本實施例中為圓柱形,其設置於第一側板22之外側。連接座90上開設有複數連接孔91。The connecting seat 90 is cylindrical in this embodiment, and is disposed on the outer side of the first side plate 22. A plurality of connecting holes 91 are defined in the connecting base 90.
第一蓋板101及第二蓋板102分別固定於基座20基座之二側,以將支撐架50及第二驅動件60封閉在基座20內。The first cover plate 101 and the second cover plate 102 are respectively fixed on two sides of the base of the base 20 to enclose the support frame 50 and the second driving member 60 in the base 20.
使用安裝機構100時,可將安裝機構100藉由連接座90固定在機器人(圖未示)之末端,藉由機器人帶動安裝機構100至預定位置,然後將膠塞(圖未示)定位於插針30之端部。開啟第一驅動件40及第二驅動件60,第一驅動件40驅使支撐架50向下運動,以帶動插針30沿其軸向進給,第二驅動件60驅動插針30進行旋轉。因此,膠塞在插針30之帶動下,以即向工件(圖未示)之鎖合孔內進給同時本身又進行旋轉之方式逐漸進入鎖合孔中。When the mounting mechanism 100 is used, the mounting mechanism 100 can be fixed to the end of the robot (not shown) by the connecting base 90, and the mounting mechanism 100 is driven to the predetermined position by the robot, and then the rubber plug (not shown) is positioned. The end of the needle 30. The first driving member 40 and the second driving member 60 are opened. The first driving member 40 drives the support frame 50 to move downward to drive the pin 30 to feed along the axial direction thereof, and the second driving member 60 drives the pin 30 to rotate. Therefore, the rubber plug is gradually moved into the locking hole by the insertion of the pin 30, so as to be fed into the locking hole of the workpiece (not shown) while rotating itself.
由於插針30帶動膠塞以軸向運動結合旋轉運動之複合運動方式進入工件之鎖合孔,在插針30與鎖合孔出現一定偏差之時候,膠塞能夠產生一定量之徑向彈性性變,從而順利將膠塞插入鎖合孔內,而無需對插針30位置進行多次調整,具有較高之安裝效率。而且,支撐板52及底板23之間採用連接元件70進行連接,且連接元件70內包括彈性件72,可使得膠塞插入鎖合孔內時,插針30受到之衝擊力得到緩衝,防止插針30被折斷,從而提高了安裝機構100之使用壽命。Since the pin 30 drives the rubber plug to enter the locking hole of the workpiece by the combined motion of the axial movement and the rotational motion, the rubber plug can generate a certain amount of radial elasticity when the pin 30 and the locking hole have a certain deviation. The change is made, so that the rubber plug can be smoothly inserted into the locking hole without multiple adjustments of the position of the pin 30, and the installation efficiency is high. Moreover, the connecting member 52 and the bottom plate 23 are connected by a connecting member 70, and the connecting member 70 includes an elastic member 72, so that when the rubber plug is inserted into the locking hole, the impact force of the pin 30 is buffered, and the insertion is prevented. The needle 30 is broken, thereby increasing the service life of the mounting mechanism 100.
可理解,基座20也可為其他形狀,如六邊形框體,第一驅動件40也可為線性馬達,只要能帶動插針30軸向進給即可,第二驅動件60也可為氣動主軸,只要能帶動插針30作旋轉運動即可。It can be understood that the base 20 can also have other shapes, such as a hexagonal frame. The first driving member 40 can also be a linear motor, as long as the pin 30 can be driven to feed axially, and the second driving member 60 can also be used. For the pneumatic spindle, as long as the pin 30 can be rotated for rotation.
綜上所述,本新型確已符合新型專利之要件,遂依法提出專利申請。惟,以上該者僅為本新型之較佳實施方式,自不能以此限制本案之申請專利範圍。舉凡熟悉本案技藝之人士援依本新型精神所作之等效修飾或變化,皆應涵蓋於以下申請專利範圍內。In summary, the new model has indeed met the requirements of the new patent, and has filed a patent application in accordance with the law. However, the above is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application in this case. Any equivalent modifications or variations made by those who are familiar with the skill of the present invention in accordance with the spirit of the present invention shall be covered by the following patent application.
100‧‧‧安裝機構100‧‧‧Installation agency
20‧‧‧基座20‧‧‧ Pedestal
21‧‧‧頂板21‧‧‧ top board
22‧‧‧第一側板22‧‧‧First side panel
23‧‧‧底板23‧‧‧floor
24‧‧‧第二側板24‧‧‧ second side panel
28‧‧‧固定件28‧‧‧Fixed parts
30‧‧‧插針30‧‧‧pins
40‧‧‧第一驅動件40‧‧‧First drive
41‧‧‧主體部41‧‧‧ Main body
42‧‧‧第一驅動軸42‧‧‧First drive shaft
50‧‧‧支撐架50‧‧‧Support frame
51‧‧‧連接框51‧‧‧Connection box
511‧‧‧固定桿511‧‧‧Fixed rod
512‧‧‧連接臂512‧‧‧ connecting arm
52‧‧‧支撐板52‧‧‧Support board
60‧‧‧第二驅動件60‧‧‧second drive
61‧‧‧主體部61‧‧‧ Main body
62‧‧‧第二驅動軸62‧‧‧Second drive shaft
70‧‧‧連接元件70‧‧‧Connecting components
71‧‧‧導桿71‧‧‧Guide bars
711‧‧‧導向部711‧‧‧Director
712‧‧‧固定部712‧‧‧Fixed Department
72‧‧‧彈性件72‧‧‧Flexible parts
73‧‧‧導套73‧‧‧ Guide sets
74‧‧‧卡環74‧‧‧ card ring
80‧‧‧導向件80‧‧‧guides
90‧‧‧連接座90‧‧‧Connecting seat
91‧‧‧連接孔91‧‧‧Connection hole
101‧‧‧第一蓋板101‧‧‧First cover
102‧‧‧第二蓋板102‧‧‧second cover
圖1係本新型實施例之安裝機構之立體示意圖。1 is a perspective view of a mounting mechanism of the present embodiment.
圖2係本新型實施例之安裝機構之立體分解圖。2 is an exploded perspective view of the mounting mechanism of the present embodiment.
圖3係本新型實施例之安裝機構去除第一蓋板及第二蓋板後之立體示意圖。FIG. 3 is a schematic perspective view of the mounting mechanism of the present embodiment after removing the first cover plate and the second cover plate.
100‧‧‧安裝機構 100‧‧‧Installation agency
101‧‧‧第一蓋板 101‧‧‧First cover
102‧‧‧第二蓋板 102‧‧‧second cover
21‧‧‧頂板 21‧‧‧ top board
22‧‧‧第一側板 22‧‧‧First side panel
23‧‧‧底板 23‧‧‧floor
24‧‧‧第二側板 24‧‧‧ second side panel
28‧‧‧固定件 28‧‧‧Fixed parts
30‧‧‧插針 30‧‧‧pins
40‧‧‧第一驅動件 40‧‧‧First drive
50‧‧‧支撐架 50‧‧‧Support frame
60‧‧‧第二驅動件 60‧‧‧second drive
70‧‧‧連接元件 70‧‧‧Connecting components
90‧‧‧連接座 90‧‧‧Connecting seat
91‧‧‧連接孔 91‧‧‧Connection hole
Claims (10)
The mounting mechanism of claim 1, wherein the first driving member is a cylinder and the second driving member is an electric motor.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012202518721U CN202514239U (en) | 2012-05-31 | 2012-05-31 | Mounting mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
TWM445468U true TWM445468U (en) | 2013-01-21 |
Family
ID=47066683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW101211862U TWM445468U (en) | 2012-05-31 | 2012-06-20 | Assembly mechanism |
Country Status (3)
Country | Link |
---|---|
US (1) | US9132520B2 (en) |
CN (1) | CN202514239U (en) |
TW (1) | TWM445468U (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106624731A (en) * | 2015-10-29 | 2017-05-10 | 湖北汽车工业学院 | Central axle housing and semi-axial casing pipe assembly positioning pin pressing machine |
CN107470890B (en) * | 2017-07-31 | 2023-07-07 | 广东顺德三合工业自动化设备股份有限公司 | Pump body bent axle spring on-line installation equipment |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US303400A (en) * | 1884-08-12 | William bedlich | ||
US2004211A (en) * | 1933-10-14 | 1935-06-11 | Albert M Munzinger | Bung withdrawal machinery |
US3104460A (en) * | 1960-01-25 | 1963-09-24 | Tom S Gillis | Devices for disassembling machine parts |
US3390446A (en) * | 1966-04-13 | 1968-07-02 | James E. Ettorre | Fluid pressure operated pin inserter |
US3504420A (en) * | 1967-06-15 | 1970-04-07 | Ray F Shores | Plugging device |
US4366617A (en) * | 1980-03-12 | 1983-01-04 | Westinghouse Electric Corp. | Plug removal apparatus |
US4369662A (en) * | 1981-02-25 | 1983-01-25 | Westinghouse Electric Corp. | Plug installation apparatus |
DE3324777A1 (en) * | 1983-07-08 | 1985-01-17 | Kraftwerk Union AG, 4330 Mülheim | REMOTE-OPERATING TOOL FOR PLUGING PLUGS IN HEAT EXCHANGER PIPES |
US4734972A (en) * | 1986-01-15 | 1988-04-05 | Westinghouse Electric Corp. | Tube plug removal machine |
US5255717A (en) * | 1987-05-18 | 1993-10-26 | Westinghouse Electric Corp. | System for removing a plug from a heat exchanger tube |
JP2580998Y2 (en) * | 1990-09-05 | 1998-09-17 | 三菱重工業株式会社 | Plug installation tool for steam generator |
US5465483A (en) * | 1994-02-28 | 1995-11-14 | Westinghouse Electric Corporation | Method for removing a metallic plug from a tube |
-
2012
- 2012-05-31 CN CN2012202518721U patent/CN202514239U/en not_active Expired - Fee Related
- 2012-06-20 TW TW101211862U patent/TWM445468U/en not_active IP Right Cessation
-
2013
- 2013-04-16 US US13/863,510 patent/US9132520B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20130318759A1 (en) | 2013-12-05 |
CN202514239U (en) | 2012-10-31 |
US9132520B2 (en) | 2015-09-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20170184290A1 (en) | Track system | |
CN111779933B (en) | Display device and fixing device of display | |
WO2018121725A1 (en) | Steering gear shaft pressing device | |
CN111473208B (en) | Rotating support structure | |
US11412629B2 (en) | Hinge device | |
TWM445468U (en) | Assembly mechanism | |
CN111970918B (en) | Circuit board fixing device convenient to dismouting | |
CN103390970B (en) | Split type direct driving motor apparatus for assembling | |
CN105953053A (en) | Equipment support table device | |
CN105583642A (en) | Positioning device | |
TWI617116B (en) | Voice coil motor | |
CN218869820U (en) | All-round display device of drawing design | |
US11872661B2 (en) | Disassembling device | |
US9004475B2 (en) | Clamping mechanism with detachable positioning member | |
CN111503495B (en) | General type runing rest structure | |
EP3998041B1 (en) | Denture support mechanism, three-dimensional denture scanner, and control method thereof | |
KR20130075622A (en) | Adsorption head of surface mount device | |
TWI615236B (en) | Linear transmission mechanism with modular support device | |
TWI426009B (en) | Manipulator | |
TWI442991B (en) | Air suction lock screw device | |
JP5488257B2 (en) | Electronic equipment storage rack | |
TWM578755U (en) | Hollow shaft motor driving device | |
CN105598869A (en) | Positioning device | |
KR102181059B1 (en) | Chain Holder Of Mobile Rack Fixed | |
US11197378B2 (en) | Device for assembling screws into printed circuit board |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4K | Annulment or lapse of a utility model due to non-payment of fees |